MediumGHSA-3x9f-74h4-2fqrCVE-2021-32012

Denial of Service in SheetJS Pro

Published 22 Jul 2021 · Updated 10 Sept 2026

Affected package

Affected: <0.17.0
Fixed in: 0.17.0

Update to the fixed version for your release line, for example:npm install xlsx@0.17.0

Details

SheetJS Pro through 0.16.9 allows attackers to cause a denial of service (memory consumption) via a crafted .xlsx document that is mishandled when read by xlsx.js (issue 1 of 2).

Is GHSA-3x9f-74h4-2fqr in any of your client repos?

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References

Advisorynvd.nist.gov/vuln/detail/CVE-2021-32012
Linkfloqast.com/engineering-blog/post/fuzzing-and-parsing-securely
Linksheetjs.com/pro
Linkwww.npmjs.com/package/xlsx/v/0.17.0
Linkwww.oracle.com/security-alerts/cpujan2022.html

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.